fn main() {
    let x = 3;
    let x = x + 2;
    let x = x * 2;
    println!("x;{}", x);

    let x = "Hello Rust";
    println!("x:{}", x);

    const MAX_NUM: u32 = 1024;
    println!("MAX:{}", MAX_NUM);

    // integer type
    let integer1: u32 = 17;
    let integer2 = 17u32;
    let integer3 = 17;
    let integer4: u32 = 0b10001;
    let integer5: u32 = 0o21;
    let integer6: u32 = 0x11;
    let integer7: u32 = 50_000;

    println!{"integer1:{}", integer1};
    println!{"integer2:{}", integer2};
    println!{"integer3:{}", integer3};
    println!{"integer4:{}", integer4};
    println!{"integer5:{}", integer5};
    println!{"integer6:{}", integer6};
    println!{"integer7:{}", integer7};



}
